Automatic-telephone register-sender.



F. N. REEVES & A. E. ELUNDELL. AUTOMATIC TELEPHONE REGISTER SENDER.

APPLICATION FILED JAN. 19. I916. 1,232,087. Patented July 3,1917.

//7ve/7f0/ s: Fran/r N Reeves. Alfie/7 E. Luflde/A F. N. REEVES & A. E.LUNDELL.

AUTOMATIC TELEPHONE REGISTER SENDER.

APPIJCATION FILED JAN- 19. I916.

Patented July 3, 1917.

2 SHEETS-SHEET 2.

FRAN K N REEVES, OF NEWARK, NEW JERSEY, AND ALBEN E. LUN DELL, OF NEWYORK,

N. Y., ASSIGNORS TO WESTERN ELECTRIC N. Y., A CORPORATION OF NEW YORK.

COMPANY, INCORPORATED, OF NEW YORK,

AUTOMATIC-TELEPHON E REGISTER-SENDER.

Specification of Letters Patent.

Patented July a, 119i 7.

Application filed January 19, 1916. Serial No. 72,908.

To all whom it may concern:

Be it known that we, FRANK N.'Rnnvns and ALBEN E. LUNDELL, citizens ofthe United States, residing at Newark, in the county of Essex and Stateof New Jersey, and at New York, in the county of Bronx and State of NewYork, respectively, have invented certain new and useful Improvements inAutomatic-Telephone Register- Senders, of which the following is a full,clear, concise, and exact description.

This invention relates to automatic telephone systems in which registersare provided at the central office which are arranged to take up thedesignation or number of the wanted subscribers line and thereaftergovern the operation of the cen-' tral ofiice sending device, by meansof which the switches used in establishing a talking connection betweentwo subscribers are controlled. A register device of the generalcharacter of thatherein disclosed is shown in Figures 3 and 5 of patentto Frank R. McBerty, No. 1,125,579. This patent also shows the manner inwhich registering devices of this character control the operation ofsetting up a connection.

In the present invention, sequence switch structures, similar to thatshown in patent to Reynolds and Baldwin, N 0. 1,127,808, are used bothas registers and as a circuit-controlling sequence switch, as thisstructure permits a single cam or disk to control a greater number ofcircuits than the sequence switch shown in the patent first referred to.

The present invention contemplates the application of a registeringdevice of this character to a full automatlc telephone system, that is,a telephone system in which the establishment of the connection iscontrolled by means of an interrupter or sending device at thesubscribers station.

The principal object of this invention is the provision of apower-driven registering device of the sequence switch type abovereferred to, wherein the register is moved to its set position step bystep under the control of the impulses from a sending device which maybe located ata subscri-b'ers station. y

In the drawing, Fig. 1 diagrammatically indicates a subscribers linewith a line finder switch associated therewith. In this figure is alsoshown a sender trunk finder switch by means of which the the' sendingdevice controlled thereby are temporarily associated with the linefinder.

In Fig. 2 is diagrammatically illustrated a plurality of registeringdevices and the portion of the contacts controlled thereby.

In the drawing, 1 represents the substation and 2 the line finder switchassociated with the subscribers line. 3 is the sender finder switch, bymeans of which the send ing apparatus is connected to a trunk which isjoined to the subscribers line by the finder switch 2. This trunk willbe extended in the usual manner through a series of switches by means ofwhich a connection is established. The invention may be used in a systememploying any desired kind of switches, but the circuits hereindisclosed were especially designed for a system employing switchessimilar to that shown in the patent to Craft and Reynolds, No.1,123,696.

It is believed the invention will be readily understood from adescription of the operation of setting up the registers, and as theother features form no part of the present invention, the

of the registering devices.

We will now assume that the subscriber at 1 has initiated a call, theline finder switch 2 has picked up the subscribers line, and that thesender cord finder 3 is associated with the connecting circuit of thefinder switch 2. At this time the sequence switch contact 6 at the linefinder will be closed and the sequence switch of the sender trunk finderwill be in position 1. Each of the sequence switch structures shown inthe drawings will-be provided with a master contact, which appearsimmediately above its power magnet. These master contacts are open onlyat the positions of their respective switches indicated by the numeralsadjacent thereto. Thus, these numerals represent the only positions inwhich the sequence switches can stop. All the other sequence switchcontacts which appear on the drawings are open except at the positionsindicated by the numerals adjacent thereto. With the apparatus as abovenoted, a circuit will extend from grounded battery through relays 1 and5 in series, the left brush of trunk finder switch 3, sequence switchcontact 6 (21}- to operators register and 5t disclosed in thisapplication so 10), the lower brush of the line finder switch 2 andcut-off relay 7 to ground. All three of the relays will be operated. Theenergization of relay 4 will complete a circuit from battery throughsequence switch motor magnet 8, sequence contact 9 (1) 'and the frontcontact of relay 4 to ground. This causes the sequence switch to move toposition 3 under the control of its master contact 10. A circuit nowextends from battery through the left winding of stepping relay 11,innermost armature of relay 5, middle brush of the trunk finder, lowersequence switch contact 12, middle line finder brush, over the lowerconductor of the subscribers line and through the substation apparatusthereat, back over the upper conductor of the subscribers line, throughthe upper line finder brush, lower sequence contact 13, right brush ofthe sender trunk finder, right armature of relay 5 and back to batterythrough the right winding of relay 11. This circuit will be completedsimultaneously with the circuit for the magnet 8 of the sequence switchso the left contact of relay 11 will open before contact 14 closes, andno effective circuit will be established for relay 15 through thearmature of relay 11 until the first interruption of the circuit at thesubscribers sending device.

The subscriber now operates his sending device or dial, which causes aseries of interruptions in the subscribers line circuit. This will causethe relay 11 to be repeatedly deenergized and energized. With the firstdeenergization of the relay 11, an original energizing circuit iscompleted from ground through the armature and front contact of relay4:, sequence switch contact 14 (3), armature and back contact of relay11, right winding of relay 15, register control contact 16 (N), sequencecontact 17 (3), back contact and armature of relay 18 to battery andground. Relay15 pulls up and corn pletes a locking circuit for itselfthrough its inner armature and battery to ground. It will be noted thatprior to its energization, a circuit for relay 15 extended from batterythrough the left winding of said relay, both upper contacts of sequenceswitch spring 23 (N), sequenceswitchcontact 26 (3) and resistance 10to'ground. However, the left relay winding is short-circuited by abranch circuit extending through inner armature and back contact of therelay, contact 24 (3), right contact 23- (N), contact 26 (3) andresistance 10, to ground. Thus the circuit through the left relaywinding, is ineffective until this shunt circuit is broken at the backcontact of the relay. Relay 15 also completes a circuit from groundthrough its outermost armature and contact, contact 19 (3), contact 20(N) and register motor mag net 21 to battery and ground. The registermoves out of normal or position N and is carried into position 0 bymeans of its master contact 22. The deenergization of relay 11 is butmomentary, and upon its energization the holding circuit through theright winding, of relay 15 is interrupted. Its armatures are held up,however, by the circuit through its left winding until said circuit isbroken at contact 23 (N), when the register moves to position 0. Thepurpose of the holding circuit through the left winding of relay 15 (andas will later appear, the holding circuit through the left winding ofrelay 18) is to insure the movement of the register into its nextposition, or at least until it is under the control of its mastercontact 22.

On the next denergization of relay 11, an original energizing circuit iscompleted for relay 18 from ground through the armature of relay 4,sequence switch contact 14 (3), armature and back contact of relay 11 asbefore, and thence through the right winding of relay 18, sequenceswitch contact 23 (0), sequence switch contact 24 (3), back contact andinnermost armature of relay 15 to battery and ground. Relay 18 isenergized and locks up through its front contact and innermost armature.It is also locked up by a circuit through its left windspring 16 (0),contact 26 (3) and resistance 40 to ground. As in the case of relay 15,the flow of current in this circuit is not effective until the shortcircuit extending through inner armature and back contact of the relay,contact 17 (3), upper right contact 16 (0), contact 26 (3), resistance40 to ground, is broken. The right armature of relay 18 completes-a.circuit from ground through sequence switch contact 23 (3), registercontact 20 (0), motor magnet 21 and battery to ground. The registerthereupon moves to position 1. Upon the energization of relay 11 and-theopening of contacts 16 (0), when the register moves to position 1, relay18 drops off. Upon the next denergization of relay 11, the previouslytraced circuit for right winding of relay 15 is again completed,extending through register contact 20, but this time closed in position1 instead of position N as before.-

It will be noted that upon successive deenergizations of the-relay 11,the original energizing circuits are alternately established for relays15 and 18, the circuit of each relay being completedthrough the innerarmature and back contact of the other relay. The purpose of this is toinsure that only one relay will be energized by a single impulse fromrelay 11. As each of these relays, upon its energization, locks upthrough its inner armature and front contact, it must necessarily keepbattery removed from the circuit of the other relay, even though theregister reached its next position and thus completed the circuit ofing, and upper contacts of sequence switch 1 tion of the left armatureof relay 11.

In short, this action is as follows: The circuits of the. relays 15 and18 are alternately closed at'successive positions of the register andthe energizing circuit for the register power magnet at any position ofthe register is closed through contacts of the relay whose circuit isclosed by the register in that position. When the register moves to itsnext position, this energizing circuit is broken and a circuit isestablished for the other relay 15 or 18, so it will be energized by thenext impulse, and in its new position the register provides a circuitfor its power magnet to a front contact of that relay whose circuit isnow closed at the register contacts.

The cycle of'operations above described will be repeated with successiveenergizations and denergizations of relay 11; Upon the termination ofthe series of impulses, a circuit willv extend from battery through theleft Winding oflthe sluggish relay 27, sequence switch contact 28 (3),register contact 29 (0 to 9), register contacts 30,31, 32 '(N),conductor 33, front contact and armature of relay 11, sequence switchcontact 14 (3), contact and armature of relay 4 to ground. This circuitwas completed with each energization of relay 11, but as relay 27 ismade sluggish to pull up by the closed circuit normally maintained aboutits right winding, it did not pull up during the brief intervals itscircuit was closed while the impulses were being sent, and its circuitwas not closed until the register took its first step and thereby closedupper contact 29. It does, however, pull up on the termination of theseries of impulses and closes a circuit from battery through sequenceswitch motor magnet 8, and the sequence switch moves to position 4 underthe control of its master contact 10. As the sequence switch moves outof position 3, the

circuit for relay 27 is interrupted at contact 28 (3) and the relayfalls off. .The circuit of this relay will not be again completed untilupper contact 30 of the next register is closed in position 0 by thefirst of the next series of impulses. Upon the next series of impulsesbeing sent from the substation, corresponding circuits will beestablished, but as the sequence switch is now in position 4, thecircuits will serve to operate the sequence register control magnet 34.Upon the termination of the series, the relay 27 will be againenergized, this time by a circuit from battery through the left windingto said relay, sequence switch contact 28 (4), register contact 30contacts 31 and 32 (N), conductor '33, front contact and right armatureof relay 11, sequence switch contact 14 (4), and contact "nection, willbe readily lays,

(O to 9), register-f and armature of relay 4 to ground. This callyillustrated on the drawing and the circuits therefor have been in themain omitted.

The register contacts, which appear above conductor 33 in'Fig. 2, may bewired to a set of counting relays in a manner similar to that shown onFig. 50f the above mentioned patent to McBerty, and by reference to saidpatent the manner in which the reg isters, herein diagrammaticallyrepresented, control the operation of a'series of matic switches toestablish a talking conunderstood. What is claimed is:

1. In a telephone system, a call storing register, a pair of relays forgoverning the movement of 'said register, a power magnet for causing themovement of said register, energizing circuits for said. magnetextending through contacts of said relays respectively, and means foralternately operating said relays to complete said circuits.

2. In a telephone system, a call storing register having a lurality ofset positions,

a magnet for causing the movement of said register, contacts, meanscontrolled by said opening and closing said contacts, a pair of relays,circuits for said magnet each extending through contacts of one of saidreand circuits for said relays respectively, alternately closed at saidregister contacts.

3. In a telephone system, a call storing register having a pluralityof'set positions, contacts governed by said register variously closed atsaid positions, a magnet for causing the movement of said register, aplurality of relays, circuits for said magnet each extending throughcontacts of a different one of said relays, and circuits for said relaysclosed in a definite order at said register contacts as said registermoves to suecessive positions.

4. In a telephone system, a pair of relays,

a sender controlling register having a plurality of set positionscontrolled thereby,

an impulse circuit, means responsive to imautowill drive the sequenceswitch to position 5.

said relays for causing said register to move a from one of itspositions to the next.

5. In a telephone system, a call storing register, a pair of relays forgoverning the movement of said register, a continuously operating powerdevice, a clutch magnet for joining said register to said power deviceand energizing circuits for said magnet exmagnet for joining saidregister to said power member to cause the movement of said register,contacts, means controlled by said register in its movement foralternately opening and closing said contacts, a pair of relays,circuits for said magnet each extending through contacts of one of saidrelays, and circuits for said relays, respectively, alternately closedat said register contacts.

7. In a telephone system, a register having a plurality of setpositions, contacts variously closed at said positions, a continuouslyoperating power member, a magnet for joining said register to said powermember to cause the movement of said register, a pair of relays,circuits for said magnet eachv extending through contacts of one of saidrelays, and circuits for said relays, one of said relay circuits beingopened and the other closed at said register contacts each time saidregister moves from one position to the next.

8. In a telephone system, a pair of relays, a sender controllingregister having a plurality of set positions controlled thereby, animpulse circuit, means responsive to impulses in said circuit foralternately ener gizing said relays, locking circuits for said relays,respectively, matures attracted, means responsive to the energization ofeither one of said relays for causing said register to move from one ofits positions to the next, and contacts for said register operated insuch movement to open the locking circuit of the energized relay.

9. In a telephone system, a plurality of relays, a call storing registerhaving a plurality of set positions, power means for moving saidregister to said positions controlled by said relays; an impulsecircuit, means responsive to impulses insaid circuit for alternatelyenergizing said relays, locking circuits for said relays, respectively,for maintaining their armatures attracted, means responsive to theenergization of any one of said relays for causing said register to movefrom one of its positions to the next, and contacts of said registeroperated in such movement to open the locking circuit of the relay thenenergized and prepare a locking circuit for another of said relays. v

' 10. In a telephone system, a sender controlling register having aplurality of set positions, a pair of relays for governing the movementof said register to successive positions, an impulse circuit having apair of for holding their arbranches in which are included windings ofsaid relays, respectively, means actuated upon the energization of oneof said relays for causing said register to move from one of itspositions to the next, and means controlled by said register in suchmovement for interrupting the circuit of the relay then energized andpreparing a path for the energization of the other said relay.

11. In a telephone system, a sender controlling register having aplurality of set positions, contacts for said register variously closedat its several positions, a magnet for causing the movement of saidregister to its 'sucessive positions, a pair of relays, a circuit forsaid magnet having branches arranged to be closed at contacts ofsaidrelays respectively, an impulse circuit having a pair of branches inwhich are included windings of said relays respectively, and meansoperated upon the energization of one of said relays in response to animpulse in said circuit for energizing said magnet to move the registerfrom one position to the next, said contacts being actuated in suchmovement to interrupt the circuit of the relay then energized andprepare a circuit for the other sai relay.

12. In a telephone system, a sender controlling register having aplurality of set positions, a continuously moving power member, a magnetfor joining said register to said power member, circuits for saidmagnet, a pair of relays for controlling said circuits to cause themovement of said register to successive positions, an impulse circuithaving a pair of branches in which are included windings of said relaysrespectively, means actuated upon the energization of either one of saidrelays for closing a circuit for said magnet to cause said register tomove from one of its positions to the next, and means controlled by saidregister in such movement for interrupting the circuit of the relay thenenergized and preparing a path for the other said relay.

13. In a telephone system, a sender contrOlling register having aplurality of set positions, contacts for said register variously closedat its several positions, a continuously moving power member, a magnetfor joining said register to said power member to cause the movement ofsaid register to its successive positions, a pair of relays, a circuitfor said magnet having branches arranged to be closed at contacts ofsaid relays respectively, a pair of branches in each of which isincluded a winding of one of said relays respectively, and meansoperated upon the energization of oneof said relays in response to animpulse in said circuit for energizing saidmagnet to move the registerfrom one position to the next, said register contacts being actuated insuch movement to interan impulse circuit having rupt the circuit of therelay then energized and-to relay.

14:. In a'telephone system, a plurality of sender controlling registers,means for trans-- mitti'ng'. impulses to one of said reglsters to causeit to move step by step through a plurality of positions, a sequenceswitch for extending said controlling circuits to another of saidregisters, a relay, a circuit for said sequence switch arranged to beclosed at a front contact of said relay, means for momentarily closingthe circuit of said relay with each impulse of a series subsequent tothe first impulse, and means for transmit- ;ting a prolonged impulse tosaid relay at I a plurafity of positions, a sequence switch thetermination of the series of impulses,

whereby fit will be operated to cause said sequence -switch to move intoa posltion to .close the control circuits to the next register.

15. In a t lephone system, a plurality of sender "confrolling registers,means for transmittinga series of impulses to one of saidregisters-for'causing it to move through prepare a circuit for the other said forextending said controlling circuits .to another of said registers, a,relay, a pair of windings for said relay, a circuit for'said' sequenceswitch arranged to be closed at a front contact of said relay, meansvfor momentarily closing acircuit through one winding of said relay witheach impulseoi a series subsequent to the firstimpulse a normally closedcircuit through the ot er winding of said relay for preventing it fromresponding to a momentary closure of its circuit, means fo transmittinga pro such movement for opening the circuit of said relay. Y

In witness whereof, we hereunto subscribe our names this 17th day of-January, A.ID., 19 1a- FRANK N. REEVES.

' ALBEN E. LUNDELL,

